RIGA (Reuters) - Hundreds of Latvians knitting 4,500 pairs of woollen mittens as gifts for the November NATO summit have been told to avoid a folk symbol said to ward off evil since it looks like a Nazi swastika. A spokeswoman for the NATO leaders' summit said the Latvian Thunder Cross, or Fire Cross, will not figure in the design of any of the thousands of unique pairs of mittens some 300 Latvians are producing for NATO delegates lest it be misinterpreted. The Thunder Cross is a folklore symbol used as a charm against evil for Latvians. It quite commonly...